On the way to the R D meeting, Sun Hang met many people from labor service companies who had just returned from a meeting.
When these people from the labor service company saw Sun Hang, they all greeted him from afar,"
"Hello, Section Chief Sun…"
" Congratulations on your promotion, Section Chief Sun…"
" Section Chief Sun, I specially made a men's shirt with the fabric you gave me last time. I'll show it to you to try on later…"
Lin Shufen said to Sun Hang eagerly.
The others were also eager to win over Sun Hang.
After a while, Sun Hang finally broke away from the crowd and continued to walk toward the meeting room of the Red Star Military Factory.
When they arrived at the meeting room, the higher-ups of the Red Star Military Factory had been waiting for a long time.
Zheng Shan didn't bother with any nonsense. He asked Sun Hang to start talking about how to develop the new gun.
"Comrade Sun Hang, we have less than a month left. Tell us where we should start with this new gun…
To be honest, we have no clue at all.”
At this moment, Sun Hang looked directly at Hu Qinghe.
Hu Qinghe nodded and took out a stack of drawings as thick as a fist from a book he had brought with him…"
"Manager, these are the blueprints of the new gun that I drew according to Sun Hang's request after receiving his instructions these few days…"
Sun Hang had been busy trying to get the machine tools needed to process the new gun back to the Red Star factory.
However, Hu Qinghe was not idle either.
Sun Hang gave Hu Qinghe the general structure and size of the new gun.
Hu Qinghe worked overtime and finally managed to draw all the blueprints this afternoon.
Hu Qinghe's eyes were red. It was obvious that he had been staying up late for several days. He only slept for one or two hours a day.
Zheng Shan and the others were stunned when they saw Hu Qinghe holding a stack of blueprints.
The next moment, Zheng Shan's face lit up with joy."
"Sun Hang, with this blueprint, won't we be able to directly process it according to the blueprint? Then, won't we be able to develop a new gun in less than a month and bring it to the National Defense Science and Industry Department?”
Hearing this, the others relaxed.
However, the next moment, Zheng Shan noticed that Sun Hang's expression did not change at all. Instead, he frowned.
Factory Manager Zheng, things might not be as simple as you think…"
The information the system gave Sun Hang about the 81-1 was based on modern 21st century craftsmanship.
After a discussion between Sun Hang and Hu Qinghe, they realized that in the 1970s, there were problems with the steel and other parts of the gun barrel.
Why was it that the AK47 made in the Soviet Union was almost identical to the 56-gun that was widely used in the Dragon Country, be it in terms of structure principle or appearance?
However, whether it was the performance or the service life of the gun, it was better than the 56.
The core of the problem was the steel used to make the gun.
The quality of the steel used by the Dragon Country in the 1970s was still much worse than that of Su Lian.
Of course, the quality problem of the previous part had been made up for in the modern 21st century.
Moreover, Sun Hang also knew that Su Lian's steel was actually made by adding some rare earth elements, which could increase the service life of the entire steel to a higher level.
However, even if Sun Hang knew the formula, with his current energy and the Dragon Country's own steel-making level in the 1970s, he would not be able to do it.
It was impossible to make up for this shortcoming in a short period of time.
After hearing Sun Hang's introduction, Zheng Shan and the others frowned."
" So, Sun Hang, what you mean is that we have the blueprint for the new gun and the equipment, but the most important thing is that there's a problem with the choice of materials..."
Hu Qinghe took off his square-framed glasses and rubbed his nose bridge. Then, he continued,
Factory Manager Zheng, you're absolutely right. The problem of material selection is an insurmountable gap in the development of new guns…"
Seeing Zheng Shan and the rest's confused expressions, Hu Qinghe continued,"
"Don't think that we only need to use different types of steel to try.
A gun is a very complicated structure, including the activation and recoil mechanism, the air guide, the trigger pin, the handle sleeve, the recoil spring, the catch hook, and so on…"
" Let's take the barrel as an example. The rifling inside the barrel is made of different materials. Therefore, the initial speed of the bullet when it is fired from the barrel will vary greatly…"
"This is mainly related to the friction coefficient between the bullet and the steel.”
" And Sun Hang's proposal to make the new gun 81-1 meet the high precision standard requires a suitable steel material to meet the requirements of the new gun to the greatest extent..."
" This is only a part of the barrel. The other parts have different structures. When each part is mixed together and the materials chosen are different, the overall performance of the gun will be very different..."
Hearing Hu Qinghe's words, Zheng Shan was confused."
"Can't we get different materials and try them out one by one?”
Hu Qinghe nodded and continued,"
" Sure, but it'll be time-consuming and laborious. I can guarantee that we'll use different materials to test it. In order to meet the best performance of the gun, it'll probably take at least half a year..."
" Moreover, the cost of the materials consumed will be a huge sum in the future…"
When Zheng Shan and the others heard Hu Qinghe's words, their faces darkened.
Only then did they understand why other research institutes and military factories took a year and a half to develop a new gun.
The difficulty of developing a new gun was indeed much more difficult than fixing some broken guns and producing some bullets in the past.
Zheng Shan was still unwilling to give up. He looked up at Sun Hang and Hu Qinghe and said,"
"Is there no other way to save time and materials?”
Hu Qinghe shook his head.
However, Sun Hang nodded.
Zheng Shan and the others 'eyes lit up.
In the next moment, everyone's eyes focused on Sun Hang.
Hu Qinghe also looked at Sun Hang curiously.
Sun Hang raised his head and looked around. Then, he slowly said,"
" This method is the 'finite-element method'…"
" Use the finite-element method to analyze different materials and find an optimal solution…"
(There was an error in the cold forging machine in the previous chapter. The original text has been corrected.) The cold-forged gun barrel also needed to be drilled.
After the hole was made, the rifling was penetrated by a steel inner core with the same pattern as the rifling. The cold forging machine slowly rotated and knocked the blank evenly to make it elongated.
The barrels processed in this way not only had smooth inner walls and uniform rifling, but they also had extremely high overall mechanical strength and surface hardness. They could control the rotation and direction of the bullets and improve the accuracy of the shots.）
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